hey i have a 1977 16 ft monark boat flat bottom i was wondering what max size motor i should stick on it. its not a big water boat but i need a engine that will get my up the yakima river here in washington help me out guys

I would definetly go with a jet motor. The level in that river flectuates so drastically that you would be replacing your prop every trip if you didn't. I would think somewhere around a twenty horse would be plenty for that river, but I wouldn't go any bigger than a fifty horse. Just my two cents.

the back of the boat as only like 2 foot hieght on it so when i just had my 8hp on there crap i thought water would come up over the back. But hey u say seark is what monark is called now because i found a monark marine website but it looks like it is dedicated to bigger boats now

Yes I guess they just moved then talk to my Father he said it was monark/ durcraft back when. but if it was sagging with 8hp I would get a 9.9 and if you 8hp was a older motor it should sit up a little more the motors are being made lighter all the time..

"Thomas Jefferson said I had a God-given right to pursue happiness. What makes me happy is to take a mallard's head smooth off at about 20 feet.

Just bought a 16' Monark w/ a 50hp Merc. Goes like hell, but after it gets up to plane it starts to pop, hop or what ever you want to call it. I'm heading out tomorrow to give it another run. First time out we were just testing it out for leaks and engine performance. I'm going to load up the bow with some weight to see if I can get it to run out smooth. Will check back and post the results.

It has electric trim. Played around with it but had no luck smoothing it out. My 6 year old was with me and clearly not impressed! :toofunny: I'm heading out myself tomorrow should be able to work on it a bit more. I have the motor all the way down and it hops. I'm new to this big of a motor as well as being able to trim it out. I've only had to deal with a 4 hp evenrude. Any advice is welcome!

That is one big motor for a 16 footer. I have a 60 on my 16 footer and it gets flat out scary sometimes. :laughing:

Another option you may look into if it keeps hopping are some trim tabs. If you don't want to go that route I remember reading a thread on another forum about a guy who had someone weld a 12" bead down the bottom of the transom of the boat. It created enough drag that it pushed the front down. Good luck!